M37221M4H/M6H/M8H/MAH–XXXSP/FP M37221EASP/FP
P3 output mode control register
b7b6b5b4b3b2b1b0
P3 output mode control register(P3S) [Address 00CD16
]
After reset
0
B
0
Name
Functions
R W
R W
P3
0
output form
selection bit (P30S)
0: CMOS output
1: N-channel open-drain output
P3 output form
selection bit (P31S)
1
0: CMOS output
1: N-channel open-drain output
1
2
0
0
R W
R W
DA1 output enable bit
(DA1S)
0: P30 input/output
1: DA1 output
0: P3
1: DA2 output
1 input/output
DA2 output enable bit
(DA2S)
3
R W
R —
0
0
Nothing is assigned. These bits are write disable bits.
When these bits are read out, the values are “0.”
4 to 7
Fig. 8.9.2 P3 output mode control register
DA conversion register i
b7b6b5b4b3b2b1b0
0
DA conversion register i (i=1, 2) (DAi) [Addresses 00DE16, 00DF16]
After reset
0
B
Name
Functions
R W
R W
b5 b4 b3 b2 b1 b0
DA conversion
selection bit
(DAi0 to DAi5)
0
to
5
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
1
0
: 0/64Vcc
: 1/64Vcc
: 2/64Vcc
1
1
1
1
1
1
1
1
1
1
1
1
0
1
1
1
0
1
: 61/64Vcc
: 62/64Vcc
: 63/64Vcc
6
7
0
0
Fix this bit to “0.”
R W
Nothing is assigned. These bits are write disable bits.
When these bits are read out, the values are “0.”
—
R
Note : When use M37221M4H/M6H/M8H/MAH-XXXSP/FP,
there is not this register. Fix to “ 0016.”
Fig. 8.9.3 DA conversion register i (i = 1, 2)
Rev.1.00 Oct 01, 2002 page 52 of 110
REJ03B0134-0100Z
RENESAS [ RENESAS TECHNOLOGY CORP ]
